龙门县国营南昆山林场是一个以经营毛竹为主的林场,全场有毛竹成林38,000多亩,其中残林达21,000多亩。这些残林主要是由以下4个原因造成的,一、乱砍滥伐母竹;二、滥伐嫩竹;三、乱挖春笋,山兽、病虫害危害竹笋;四、久未抚育,杂草、乔、灌木丛生。这些毛竹残林密度很小,每亩立竹一般在70株以下。林内混生有马尾松,木荷、枫香、青冈栎、 Longmen County State-owned Nankunshan Forest Farm is a forest dominated by the management of bamboo forest, the audience has more than 38,000 acres of bamboo forest, of which 21 million mu of residual forest. These residual forests are mainly caused by the following four causes: First, deforestation mother bamboo; Second, deforestation tender bamboo; Third, indiscriminately digging bamboo shoots, mountain beasts, pests and diseases endangering bamboo shoots; Fourth, long time without tending, weeds, Joe, bush. The density of these residual bamboos is very small, usually less than 70 plants per mu. Pinus massoniana, Schima superba, sweetgum, Cyclobalanopsis glauca,